package com.ztech.oauth;

import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


/**
 * 全局跨域配置
 */
@Order(Ordered.HIGHEST_PRECEDENCE)
@Configuration
public class CORSFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest,
                         ServletResponse servletResponse,
                         FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        response.setHeader("Access-Control-Allow-Origin", "*");
       // response.setHeader("Access-Control-Allow-Credentials", "true");
      //  response.setHeader("Access-Control-Allow-Methods", "POST,GET,OPTIONS,PUT,DELETE,PATCH,HEAD");
      //  response.setHeader("Access-Control-Allow-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "*");
        if ("OPTIONS".equalsIgnoreCase(request.getMethod())) {
            response.setStatus(HttpServletResponse.SC_OK);
        } else {
            filterChain.doFilter(servletRequest, servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}

